:root{
  --bg:#f3f7fd; --card:#ffffff; --ink:#1c2b4b; --muted:#64748b;
  --brand:#4f6ef7; --brand2:#7c5cf0; --soft:#eaf0fe; --line:#e3eaf6;
  --ok:#16a34a; --shadow:0 10px 30px rgba(31,58,120,.10); --r:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:
    radial-gradient(1200px 500px at 85% -10%, #dbe6ff 0%, transparent 60%),
    radial-gradient(900px 400px at -10% 10%, #efe7ff 0%, transparent 55%),
    var(--bg);
  color:var(--ink); min-height:100vh;
}
[hidden]{display:none!important}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);
  padding:40px 34px;width:100%;max-width:400px;text-align:center}
.brand-mark{font-size:30px;font-weight:800;letter-spacing:.5px;display:flex;align-items:center;gap:12px;justify-content:center}
.brand-mark .orb{width:18px;height:18px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 0 0 6px var(--soft)}
.brand-mark.sm{font-size:22px;justify-content:flex-start}
.brand-sub{color:var(--muted);margin:6px 0 26px}
.login-form{display:flex;flex-direction:column;gap:10px}
.login-form label{font-size:13px;font-weight:600;text-align:left;color:var(--muted)}
.login-form input{border:1.5px solid var(--line);border-radius:12px;padding:13px 14px;font-size:15px;background:#fbfdff}
.login-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--soft)}
.err{color:#dc2626;font-size:13px;margin:2px 0 0}
.footnote{color:var(--muted);font-size:12px;margin-top:22px}

/* ---------- app ---------- */
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:18px;padding:14px 22px;
  background:rgba(255,255,255,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.tabs{display:flex;gap:6px;flex:1;flex-wrap:wrap}
.tab{border:0;background:transparent;padding:9px 14px;border-radius:12px;font-size:14px;font-weight:600;
  color:var(--muted);cursor:pointer;transition:.15s}
.tab:hover{background:var(--soft);color:var(--ink)}
.tab.active{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}
.ghost-btn{border:1.5px solid var(--line);background:#fff;color:var(--muted);border-radius:12px;padding:8px 14px;
  font-size:13px;font-weight:600;cursor:pointer}
.ghost-btn:hover{background:var(--soft)}

.wrap{max-width:1000px;margin:0 auto;padding:26px 20px 60px}
.view{display:none}
.view.active{display:block;animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* inicio */
.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:22px;margin-bottom:22px}
.hero>div:first-child{background:linear-gradient(135deg,#ffffff,#f0f5ff);border:1px solid var(--line);
  border-radius:var(--r);padding:30px;box-shadow:var(--shadow)}
.hero h1{font-size:32px;margin:0 0 10px}
.hero-sub{color:var(--muted);font-size:16px;line-height:1.5;margin:0 0 20px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-card{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-radius:var(--r);
  padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:center}
.hero-card h3{margin:10px 0 6px;font-size:19px}
.hero-card p{margin:0;opacity:.92;line-height:1.5}
.hero-icon{font-size:34px}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.quick{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;cursor:pointer;
  transition:.15s;box-shadow:0 4px 14px rgba(31,58,120,.06)}
.quick:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.quick span{font-size:24px}
.quick b{display:block;margin:8px 0 4px;font-size:16px}
.quick p{color:var(--muted);font-size:13px;margin:0;line-height:1.4}

/* tutorial */
.section-head{margin-bottom:18px}
.section-head h2{margin:0 0 6px;font-size:26px}
.muted{color:var(--muted);margin:0}
.steps{display:flex;flex-direction:column;gap:14px;margin-bottom:22px}
.step{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:20px;box-shadow:0 4px 14px rgba(31,58,120,.06)}
.step-num{flex:0 0 38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.step h3{margin:0 0 6px;font-size:17px}
.step p{color:var(--muted);margin:0;line-height:1.5}
.checklist{margin:6px 0 0;padding-left:20px;color:var(--muted);line-height:1.6}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.chips span{background:var(--soft);border:1px solid var(--line);color:var(--ink);border-radius:12px;
  padding:7px 12px;font-size:13px}
.cta{background:linear-gradient(135deg,#fff,#f0f5ff);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;text-align:center;box-shadow:var(--shadow)}
.cta p{margin:0 0 14px;color:var(--muted);font-weight:600}

/* botoes */
.btn{border:0;border-radius:12px;padding:12px 18px;font-size:15px;font-weight:700;cursor:pointer;transition:.15s}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 6px 18px rgba(79,110,247,.35)}
.btn.primary:hover{filter:brightness(1.05);transform:translateY(-1px)}
.btn.primary:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn.soft{background:var(--soft);color:var(--brand)}
.btn.big{padding:15px 26px;font-size:16px}
.btn.danger{background:#fee2e2;color:#b91c1c}

/* chat */
.chat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);
  display:flex;flex-direction:column;height:72vh;overflow:hidden}
.chat-hd{padding:16px 20px;border-bottom:1px solid var(--line);font-size:16px}
.chat-body{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px;background:#fbfdff}
.msg{display:flex}
.msg.bot{justify-content:flex-start}
.msg.user{justify-content:flex-end}
.bubble{max-width:78%;padding:11px 15px;border-radius:16px;line-height:1.5;font-size:15px;white-space:pre-wrap;word-wrap:break-word}
.msg.bot .bubble{background:var(--soft);border-bottom-left-radius:4px}
.msg.user .bubble{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-bottom-right-radius:4px}
.typing .bubble{display:flex;gap:5px;align-items:center}
.typing span{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:b 1s infinite}
.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}
@keyframes b{0%,100%{opacity:.3}50%{opacity:1}}
.chat-input-row{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line);background:#fff}
.chat-input-row input{flex:1;border:1.5px solid var(--line);border-radius:12px;padding:13px 14px;font-size:15px}
.chat-input-row input:focus{outline:none;border-color:var(--brand)}

/* projetos */
.count-pill{display:inline-block;background:var(--soft);color:var(--brand);font-weight:700;font-size:13px;
  border-radius:999px;padding:6px 14px;margin-bottom:14px}
.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.proj{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:0 4px 14px rgba(31,58,120,.06)}
.proj .tag{display:inline-block;font-size:11px;font-weight:700;color:var(--brand);background:var(--soft);
  border-radius:999px;padding:3px 10px;margin-bottom:10px}
.proj h3{margin:0 0 6px;font-size:17px}
.proj p{color:var(--muted);margin:0;font-size:14px;line-height:1.45}
.proj .meta{color:#94a3b8;font-size:12px;margin-top:12px}
.empty-state{text-align:center;padding:50px 20px;background:var(--card);border:1px dashed var(--line);
  border-radius:var(--r);color:var(--muted)}
.empty-icon{font-size:40px}
.empty-state h3{margin:14px 0 6px;color:var(--ink)}
.empty-state p{margin:0;max-width:380px;margin-inline:auto;line-height:1.5}

.foot{text-align:center;color:var(--muted);font-size:12px;padding:14px 20px 30px}

/* toast */
.toast{position:fixed;top:16px;left:50%;transform:translateX(-50%);background:#1c2b4b;color:#fff;border-radius:12px;
  padding:11px 18px;font-size:14px;z-index:50;box-shadow:var(--shadow)}

@media(max-width:720px){
  .hero{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .topbar{gap:10px;padding:12px 14px}
  .wrap{padding:20px 14px 60px}
  .bubble{max-width:88%}
}